When I pulled my 325ci motor I pulled it with headers attached. Unbolt A/C compressor and sling from frame rail, will save you from having to open up the system, disconnect wiring harness at drivers side box sling on top of motor, the shift brace arm thing can give you trouble when pulling the engine/trans out, so remove that and shifter. Leave intake manifold on, but remove things like DISA, air intake elbows, air box, obviously the cabin air filter housing (maybe you've done all this, just trying to help). Have a helper for the engine removal and installation that will be invaluable.
I am not one to replace parts prematurely, but new clutch kit for sure, and if your starter is original, it will never be easier than now.
Reinstall as complete as possible, minus a/c of course, have wiring harness attached to new motor and as connected as you can, minus disa and maf, then you just reconnect in the fuse/relay box, headers attached. Be careful with the bolts to the head from the headers as you swap, remember head in aluminum so be sure they are threading correctly before giving them the beans.
Last edited by Brinkley; 05-21-2012 at 08:37 AM.